Monday, June 18, 2018

IVSimaging Blog


Keep up to date on new products, as well as product updates.

ace with Sony's IMX174 or IMX249 Sensor - Which Camera is Right for your Application?

ace with Sony's IMX174 or IMX249 Sensor - Which Camera is Right for your Application?

ace with Sony's IMX174 or IMX249 Sensor – Which Camera is Right for your Application?Both the ace models with Sony's IMX174 and Sony's IMX249 offer the latest global shutter technology and outstanding image quality. Nevertheless there are significant differences between the models.

The ace models with Sony's IMX174 CMOS sensor help you achieve not just excellent image quality, but also high speeds up to 155 fps at a resolution of 2.3 MP.

The ace models with Sony's IMX249 are especially well suited for applications that do not require high-speed cameras, but which nevertheless need the excellent image quality of the CMOS sensors from Sony's Pregius series. With frame rates of up to 40 fps and 2.3 megapixels resolution, you'll have the right camera for your application at a lower cost.

An overview of our ace models with Sony's IMX174 CMOS sensor

An overview of our ace models with Sony's IMX249 CMOS sensor

You can find an overview of all our ace models here. You can also filter through the large selection of models based on resolution, frame rate or sensor.

Talk with our Sales Team at IVS Imaging for more information.

Digital Camera Interfaces for Machine Vision Applications

Digital Camera Interfaces for Machine Vision Applications

Digital cameras are now common because they do not have problems like transmission distortion, noise, or other signal degradations experienced when using analog cameras. With a digital output signal, little information is lost during the process of transmission, and the popularity of digital cameras has brought about the advancement in the use of many types of digital interfaces in machine vision applications. The most common interfaces in use today are Firewire, GigE, USB, Camera Link CoaXPress & HD options.

The user needs to select the most appropriate device for the application he is using. Deterministic or asynchronous transmission makes data transfer receipts to be possible, making the signal to be reliable, and as there is a two-way communication, delivery is placed over timing. For every 125μs, scheduled packet transfers is made possible in isochronous transmission, making timing to be guaranteed but making it possible to drop packets at high rates of transfer.

Capture Boards

Computers are needed during image processing. Capture boards are PCI cards which are used in acquiring and interpreting the data from digital camera interfaces, but not based on standard computer connectors. With capture boards, analog or digital camera signals can be sent into a computer for analysis, as a capture board has an analog-to-digital converter (ADC) which digitizes the signal for the image to be processed, and if the user desires, the real-time viewing of the signal can be enabled. The images are then captured and saved for printing or future use. Capture boards have basic capturing software that makes it possible for users to save, open, and view images.



FireWire (IEEE 1394/IIDC DCAM Standard)

IEEE 1394, also known as Firewire, is a popular isochronous, serial camera interface, and though it is one of the slower transfer rate interfaces, multiple cameras can be connected through both Firewire.a and Firewire.b, providing power through the Firewire cable. The use of hot-plugging/hot-swap is not a good idea, as the design of the connector may cause power pin shorting to signal pins, and this is likely to damage the device or the port. 



CameraLink is a high-speed serial interface explicitly developed for machine vision applications, especially the ones involving automated process control and inspection. A capture card is needed for CameraLink to work, and power must be separately supplied to the camera. A special cabling is needed by the user because full bandwidth is retained for data transmission through separate asynchronous serial communication channels. This is in addition to low-voltage differential pair LVDP signal lines.

About 255 MB/s transfer dedicated for video is made possible through the single-cable base configuration, and full configuration (dual outputs) allows for separate camera parameter receive/send lines for more data transfer space (680 MB/s) to be created when using certain high-speed applications.

CameraLink HS (High Speed) is the CameraLink interface extension which makes higher speed (up to 2100MB/s at 15m) to be possible when using more cables. In addition, CameraLink HS supports fiber optic cables which are as long as 300 m.


GigE Vision Standard (GigE)

GigE works with the ethernet internet protocol gigabit, and for a high-speed camera interface, makes use of standard Cat-5 and Cat-6 cables. Standard ethernet hardware like hubs, repeaters and switches can be used for multiple cameras, although it is necessary to consider the overall bandwidth whenever direct camera-to-card (non peer-to-peer) connections are used. In GigE Vision, the EMVA GenICam standard determines camera control registers, and though on some cameras optional, Link Aggregation (LAG, IEEE 802.3ad) needs many ethernet ports in parallel for data transfer rates to be increased, and for processor load to be distributed through multicasting. The network Precision Time Protocol (PTP), which is supported by some cameras, can help in synchronizing the clocks of multiple cameras in the same network connection, making a fixed delay relationship to be possible between their associated exposures.



Universal Serial Bus (USB)

A popular interface is USB 2.0 because it is common with computer users. It is not a high-speed device, but it is easy to use, and the maximum speed that can be achieved depends on the number of peripheral components of the USB, as there is a fixed rate of transfer of the bus at 480Mb/s. The plug-and-play benefits of USB 2.0 can also be enjoyed when using USB 3.0, and makes higher data transmission rates to be achieved.

iCube USB Cameras

High Definition

The need for high resolution, color fidelity, and frame rate is acute for industrial purposes to ensure that the quality of the video output is of an acceptable standard that can be used both for quality assurance, microscopy, medical or security purposes. These needs, however, must be balanced against the additional storage capacity required by HD video, unless it is for live viewing applications like some already mentioned. 

HD Interfaces for machine vision applications are similar to what we see in commercial cameras & some are specific to industrial applications. DVI, HDMI, HD-SDI & 3G-SDI are the most popular interfaces with advantages & disadvantages for each interface.



We will look further into new & upcoming interfaces for 2013 in our next segment. 

IVS Imaging is a distributor & manufacturer of machine vision cameras, lenses, cabling, monitors, filters, interface boards & more. IVS is your one stop shop for all your vision needs. IVS Imaging is known across the USA for carrying imaging products from leading manufactures, including Sony Cameras and Accessories, Basler Industrial Cameras, Hitachi Surveillance Cameras, Toshiba Network-based IP Cameras, and Sentech Advanced Digital and OEM cameras. Contact IVS Imaging for all your imaging products, parts, and accessories needs.

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